WO2010086198A1

WO2010086198A1 - Plastic closure for cooking oil bottles

Info

Publication number: WO2010086198A1
Application number: PCT/EP2010/050112
Authority: WO
Inventors: Günter Krautkrämer
Original assignee: Bericap Gmbh & Co. Kg
Priority date: 2009-02-02
Filing date: 2010-01-08
Publication date: 2010-08-05
Also published as: DE102009000555A1

Abstract

The present invention relates to a plastic closure (100) for bottles (50), the bottle necks (51) of which have a retaining flange (53) extending circumferentially at a distance underneath the bottle neck opening (52) and protruding radially to the outside, wherein the closure has at least one spout part (10) that can be placed on the bottle neck and a sealing cap (20) that seals the spout part (10) in a closed state. In order to create a plastic closure which has the aforementioned features and which can be fastened to a bottle neck or a bottle neck opening in a simpler and more reliable manner, without the bottle neck having a snap-on edge in the opening region for this purpose, according to the invention the closure additionally has at least one retaining ring (30) having an inside surface (31) that is provided for embracing the retaining flange, wherein the inside surface of the retaining ring has a first projection (32) protruding radially inward at the upper edge thereof and, at an axial distance under the upper edge, a second projection (33) protruding radially inward, wherein the spout part has a closure foot which is designed for surrounding the upper end section of the bottle neck and the lower outer edge of which has a projection that protrudes radially outward and can be received, in a state when separated from the bottle neck, with axial play between the radially inwardly protruding first and second projections (32, 33) of the retaining ring.

Description

Plastic closure for edible oil bottles

The present invention relates to a plastic closure for bottles, the bottleneck at a distance below the bottle mouth has a circumferential and radially outwardly projecting retaining flange, wherein the closure has at least one pourable on the bottle neck pourable pouring and the pouring in the closed state tightly closing cap.

Such closures are u.a. known as closures for edible oil bottles. The corresponding edible oil bottles have a bottleneck that has an outwardly projecting retaining flange below the upper edge of the bottle neck which defines the mouth of the bottle, which usually serves for securing a tamper-evident band or the like, but not for holding the opened closure or its Ausgießteiles serves at the bottleneck.

However, the present invention also relates in this respect to a combination of a bottle and a plastic closure, since the closure according to the invention is specially adapted to be attached to a bottle neck which projects radially outwardly below the mouth and at a certain small distance to this mouth Holding flange has.

In addition, other bottles are known, in addition to a retaining flange additionally a snap edge, i. a radially outwardly projecting protrusion immediately at the upper outer bottleneck edge, i. at the upper outer edge of the bottleneck mouth, which, for example, an inwardly projecting projection can engage behind a so-called closure foot of a pouring part.

Typically, the spouts of corresponding closures very often have a divided into several sectors outflow cross section, as in particular very viscous liquids, such as - -

z. As edible oil otherwise tend to leak out when the non-sectored flow cross-section is temporarily blocked by the outflowing medium and air bubbles penetrate only intermittently, resulting in a very troubled pouring with the risk of spillage of the liquid or edible oil. This can be largely avoided by dividing the flow cross-section into several sectors, whereby air bubbles can penetrate into the bottle more easily and without swelling of the liquid.

A certain problem in such closures is the connection of the pouring part placed on or inserted into the bottleneck mouth. In some cases, attempts have been made to make the cylindrical or step-shaped cylindrical portion of the pouring part into a very tight fit, so that He rests under correspondingly strong tension on the inside of the bottle neck. For this purpose, circumferential sealing beads, ribs or other elements may be provided to increase the frictional engagement with the inner surface of the bottle neck. Furthermore, as already mentioned, bottle necks are also known, which have on the outer edge of the mouth region an outwardly projecting snap bead or the like, which is engaged behind by a corresponding inwardly projecting projection on a bottleneck enclosing the closure of the pouring part and the axial pull-out force , which could act on the pouring part, opposing a corresponding resistance.

On the other hand, these solutions require specially designed bottlenecks that do not conform to an otherwise widely used bottleneck standard.

However, the sole frictional engagement for the connection of the pouring part with the bottleneck is also unsatisfactory.

Compared to this prior art, the present invention seeks to provide a plastic closure with the features mentioned above, which is simpler and safer attachable to a bottleneck or a Flaschenhalsündung without the bottleneck this has a snap edge in the mouth area.

This object is achieved in that the closure additionally comprises at least one retaining ring with an inner surface, which is provided for embracing the retaining flange, wherein the inner surface of the retaining ring at its upper edge a radially inwardly projecting first projection and at an axial distance below the upper edge a radially inwardly projecting second projection, wherein the pouring part has a for embracing the upper Endab- - -

has cut neck of the bottleneck formed closure foot, whose lower outer edge has a radially outwardly projecting projection which is receivable in a separate state of the bottle neck of the closure with axial clearance between the radially inwardly projecting first and second projections of the retaining ring.

The retaining ring therefore has two radially inwardly projecting projections between which a radially outwardly projecting projection on the lower outer portion of a closure foot is taken with play, so that with appropriately tuned diameter in addition to the radially outwardly projecting projection of the closure foot also the retaining flange of a bottle neck which is slightly below the mouth opening in this space is receivable, wherein the second projection of the retaining ring engages behind the retaining flange of the bottle neck, on which in turn the outwardly projecting projection is seated, which in turn is engaged from behind by the first projection, in order in this way to hold the closure foot and thus the entire pouring part to the holding flange and thus to the bottleneck. The retaining ring itself is thus fixed to the bottle neck, because the second projection of the retaining ring engages behind the retaining flange on the bottle neck.

According to the axial dimension of such a retaining flange, the axial play of the outwardly projecting projection of the closure foot between the first and second projections should be about 1 to 3 mm, this clearance being intended to receive the outwardly projecting retaining flange of a bottle neck when the cap is applied to the neck of the bottle.

Conveniently, the first projection is a flange-like inwardly turned, upper end portion of the retaining ring and the second projection may for example be a bead with a nose-shaped or rounded triangular cross-section, but of course other cross-sectional shapes are possible. The rounded triangular shape serves primarily to move the closure over the retaining flange by pushing it axially with the second projection, whereby the retaining ring expands correspondingly elastically and after the bead has passed over the retaining flange with this bead behind the retaining flange locked. The retaining flange may for example have a cross section which is approximately nose-shaped and / or corresponds to a triangle with rounded corners. - -

The radially outwardly projecting projection on the closure foot of the pouring part is in one embodiment of the invention also as an angled radially outwardly from the lower edge of an outer cylindrical portion of a closure foot flange, wherein the term "flange" an annular peripheral part with a flat cross-section, for example The first and second projections, as well as the retaining flange and also the radially outwardly projecting projection of the closure foot are annularly formed in one embodiment, but they could just as well consist of interrupted ring sectors or ring sections, ie they need not be closed circumferentially formed, since they only have a holding function and counteract forces that are directed in the axial direction and have a tendency to deduct the pouring part and / or the retaining ring of the bottleneck.

The closure foot expediently has a U-shaped cross section, so that it completely surrounds the bottleneck edge of the inside, outside and top. In this case, the inner cylindrical section of a closure foot is formed as part of a pouring spout, which optionally further extends axially into the neck of the bottle and may have an radially outwardly projecting sealing bead on an inner cylindrical end section, which sealingly engages with the inner surface of the bottle Intervention is. Such a sealing bead is, of course, annularly closed in a circumferential manner in order to ensure an effective sealing.

The retaining ring has an axial length, which is preferably at least twice the clear distance between the first and the second projection. As a result, the second projection is axially in the upper half, and preferably near the axial center of the retaining ring. The axial length of the retaining ring is otherwise adapted independently of the exact axial position of the second projection on the associated bottle neck and preferably dimensioned so that the retaining ring with its upper, radially inwardly turned edge surrounds a resting on the retaining flange of the bottle neck flange of the closure foot and on the other hand with its lower edge has a narrow distance (<1 mm) to the top of a handling flange 55 of the bottle neck or even on this seated. Since retaining flange and handling flange on the standard neck necks have a given clear distance of about 4 to 6 mm and since the retaining ring with its first projection still has to overlap the resting on the retaining flange or flange of the closure foot, this results in corresponding preferred Dimensions of the retaining ring and the positions of its projections. For example, in one embodiment, the overall axial length of the retaining ring is between 6 and 9 - -

mm and the second projection has, measured from the lower edge of the retaining ring, an axial position between 50 and 70%, preferably between 55 and 65% of the total axial height of the retaining ring.

The pouring part may also have in the axial direction upwards or outwards another cylindrical projection which forms a pouring section and whose upper end can have a pouring lip turned radially outwards.

In addition, the closure can also be designed such that retaining ring and closure cap are integrally connected to one another via a flexible hinge section. In particular, the hinge portion may be formed by a snap hinge made integrally with the retaining ring and the closure cap and characterized by having typically two stable end positions corresponding to the closed and fully opened condition of the cap a partially open state between these two end states a so-called dead center is present, which corresponds to an unstable position of the cap, which, starting from the dead point, under the action of elastic forces in the hinge region either in the direction of fully open or in the closed state moved without external forces must act on the cap.

Furthermore, the closure can have a guarantee strip, which connects the retaining ring and the closure cap to one another before the first opening and extends circumferentially along the entire closure outside of the hinge area. Such a guarantee strip can be produced in one piece with closure cap, retaining ring and snap hinge. It is typically connected to the retainer ring on the one hand and to the closure cap via two parallel circumscribing weak points or individual circumferentially distributed bridges which are easy to tear by hand.

An embodiment of the invention is preferred in which the closure cap has a top plate which has approximately a circular disk shape and has a cylindrical cap casing extending from the outer edge of the top plate. In addition, from the inner surface of the top plate in the axial direction (inwardly) projecting and otherwise hollow cylindrical circumferential sealing ridge be provided, whose lower end is formed as a radially outwardly slightly projecting sealing lip, which in the closed state of the cap with the inner surface the pouring part is in sealing engagement. - -

With respect to a combination of bottle and plastic closure, the object underlying the invention is achieved in that the closure has at least one retaining ring with an inner surface which comprises the retaining flange, wherein the inner surface of the retaining ring at its upper edge a radially inwardly projecting first projection and in axial distance below the upper edge has a radially inwardly projecting second projection, wherein the pouring part has a designed for embracing the upper end portion closure foot, the lower outer edge has a radially outwardly projecting projection, wherein the projection of the closure foot is seated on the retaining flange and wherein the retaining flange of the bottle neck and the outwardly projecting projection of the closure foot are received together between the first and second projections of the retaining ring.

Conveniently, the distances between the first and second projections are matched to the axial thickness of the retaining flange and the outwardly projecting projection that they are held in place with the bottle neck closure between the first and the second projection in close fit.

The spout, in addition to the closure stem, is comprised of one or more cylindrical portions which extend partially into the interior of the bottle neck and protrude from the bottle neck and over the closure stem with an upper spout portion, with a lower cylindrical end portion engaging the interior of the bottle neck. an outer sealing bead which engages the inner surface of the bottle neck and wherein the upper portion is formed as a cylindrical spout portion, the upper edge of which has a slightly outwardly turned pouring lip.

Further advantages, features and possible applications of the present invention will become apparent from the following description of a preferred embodiment and the associated figures.

Show it:

FIG. 1 shows an axial section through a closure applied on a bottle neck in the closed state and before the first opening,

Figure 2 shows an axial section through a fastened on a bottleneck, partially opened closure with respect to Figure 1 rotated by 90 ° cutting plane. - -

Figure 3 shows the enlarged section "C" of Figure 2 and

4 shows the enlarged detail "B" of Figure 1

It can be seen in Figure 1 in a section containing the closure axis 1 a applied on a bottle neck 50 plastic closure, which is generally designated 100, wherein the largest part of the bottle neck 50 and the bottle below a handling flange 55 is cut off.

The exterior of the closure consists essentially of 4 functionally distinguishable parts, but which are integrally connected to one another, namely the closure cap 20, the guarantee strip 25 and the retaining ring 30, the closure cap 20 and the retaining ring 30 additionally being represented by a plane of incision in FIG 1 invisible snap hinge 24 are connected to each other, which extends approximately at the axial height of the guarantee strip 25 over a peripheral portion which is not detected by the guarantee strip 25.

In Figure 2 can be seen the same closure, as shown in Figure 1, but in a partially open state. The guarantee band 25 is released from the retaining ring 30 and the jacket 26 of the closure cap 20 with which it was connected by some easily breakable bridges.

Retaining ring 30 and cap 20 are, as already mentioned, connected to each other via a snap hinge 24, which is recognizable in Figure 2 in an upwardly and radially outwardly bent state in section. The snap hinge is located in the position shown in Figure 2 near a dead center and is designed so that it has a resilient bias voltage that pulls the cap 20 outside the dead center either in the closed or in a fully open position.

The attached to the neck of the bottle to the stop on the handling flange 55 closure still takes a pouring part 10, which is located completely in the interior of the other, integrally connected closure elements 20, 24, 25 and 30, is placed on the edge of the bottle neck and among others is held by the retaining ring 30 on the upper end portion 51 of the bottle neck.

The cap 20 has a circumferential cap casing 26 and in its interior nor from the cap base 21 axially projecting and designed as a hollow cylinder, circumferential

Seal web 22, the free end in a slightly curved outward sealing lip - -

23 ends. The sealing web 22 and its sealing lip 23 are dimensioned so that they fit into the interior of the spout 10, wherein the sealing lip 23 rests with slight bias on the inner surface of the upper cylindrical portion 19 and the adjoining cylinder portion 14 of the spout 10. The upper end of the spout 10 is formed as a radially outwardly turned sealing lip 15. In the interior of the spout part 10, a flow restrictor 40 in the form of a plurality of tabs extending radially inwardly from the cylindrical wall section 16 of the spout part and slightly inclined axially, which bound the flow cross section to a central opening, can be seen. Between the tabs remaining stomata contribute in addition to the reduced, central opening to help that when pouring a relatively high viscosity liquid such. B. edible oil, air can penetrate next to the outflowing liquid flow into the bottle, so that the liquid thus flows out as evenly and not intermittently from the pouring opening.

One end of the guarantee strip 25 is provided with a grip tab, which is not visible here, which serves to grip the relevant end of the guarantee strip 25 and detach it from the closure cap 20 and the retaining ring 30 or the snap hinge 24.

FIGS. 3 and 4 are respective cut-outs of the closures shown in FIGS. 1 and 2.

It can be seen that the bottleneck 52 has an upper cylindrical portion 51 which defines the actual bottle mouth and tapers steppedly below this cylindrical portion 51 to a slightly smaller cylindrical diameter, wherein underneath the cylindrical portion 51 on the outside of the bottle neck there is a circumferential holding Flange 53 can be seen, which has an approximately nose-shaped or rounded trapezoidal cross-section. Below this holding flange 53, the bottleneck on its outer side again has a radial taper or constriction, which in turn is followed by a slightly more extended cylindrical portion of the bottle neck, which is bounded by a radially outwardly projecting handling flange 55, for example, a rectangular or may have a rectangular stepped cross-section. This handling flange 55 is used, for example, in cleaning and filling machines for holding and positioning the bottle or bottle neck for the various actions to be performed with the bottle, such as cleaning, filling, closing, etc.

The pouring part 10 consists essentially of a corresponding to the inner shape of the bottle neck stepped hollow cylinder with a cross-sectionally U-shaped closure foot 1 first - -

As a closure foot 1 1 is usually referred to the directly aufzusetzende a bottleneck or the mouth edge of the bottle neck portion of a spout 10, the connection of the spout or the seat of Ausgießteiles 10 with the bottleneck or the seat of Ausgießteiles 10 on the bottleneck 50, more precisely on the upper portion 51 of the bottle neck, which defines the bottle mouth causes. The closure foot is formed from an inner cylindrical portion 14 of the spout part, which extends in extension of the upper, cylindrical Ausgießabschnittes 19, wherein from the cylindrical portion 14 in the radial direction outwardly a flange 18 extends, at the radially outer end in turn a axially extending, cylindrical portion 13 parallel to the inner portion 14 connects. The lower end of this outer cylindrical portion 13 of the closure foot 1 1 is formed as an outwardly turned projection or flange portion 12. In this case, the closure foot is dimensioned such that when the upper portion 21 of the bottle neck or the bottleneck mouth is received substantially far enough in the groove formed by the closure foot 1 1, the flange portion 12 of the outer cylindrical portion 13 on the top of the retaining flange 53rd the bottle neck is seated. Ie. the length of the outer cylindrical portion 13 of the closure foot preferably corresponds at least to the distance between the retaining flange 53 and the mouth edge of the bottle neck.

The lower, slightly tapered cylindrical portion 16 of the spout 10 has on its outer side a circumferential, radially outwardly projecting sealing bead 17 whose outer diameter is dimensioned so that it rests under elastic bias on the inner surface of the slightly tapered in the corresponding region bottle neck 50 ,

A flow restrictor 40 extends with a plurality of tabs extending from the inner wall of the portion 16, radially and slightly axially inclined in the free cross section of the lower cylindrical portion 16 into it.

The closure has a closure cap 20, which can be placed on the pouring part 10 and engages with a sealing web 22 in the interior of the sections 14, 19 of the pouring part, so that the sealing lip 23 with slight bias on the inner surface portions 14 and 19, respectively , This cap 20 is connected via a snap hinge 24 and in the unopened state in addition via a guarantee strip 25 with a retaining ring 30 which connects below the hinge and the guarantee strip to the cap 20. The retaining ring has opposite the cap skirt 26 and the guarantee strip 25, which together with the snap hinge 24 substantially define a common cylinder surface, - -

a slightly larger diameter. The transition at the upper end of the retaining ring 30 on the slightly smaller diameter of the guarantee strip or the snap hinge 24 is formed by a radially inwardly directed projection 32, which also has the shape of a flange.

At a distance below this flange 32, the retaining ring still has a nose-like projection 33 projecting radially inwardly from its inner surface. The distance between the flange-like projection 32 and the nose-like projection 33 is just dimensioned so that between the flange 12 of the closure foot 1 1 and the retaining flange 53 of the bottle neck can be received in the closest possible fit, even if a close fit between these parts not is mandatory. It is understood that this close fit can be provided regardless of the exact cross-sectional shape of the respective radially inwardly or outwardly directed projections (12, 53 and 32, 33).

The axial length of the retaining ring 30 is dimensioned so that it is seated with its lower end or its lower edge approximately on the handling flange 55 of the bottle neck or at most a very small distance of a maximum of 1 mm to the handling flange 55, if the retaining ring in Incidentally, with the flange 12 of the closure foot 1 1 and the retaining flange 53 is engaged in the manner described.

The seating or nearly seating of the retaining ring 30 on the handling flange 55 impedes any manipulation attempts that might otherwise be attempted to lever the retaining ring 30 with its inwardly projecting protrusion 33 over the retaining flange 53 of the bottle neck to manipulate the bottle contents in this manner.

FIG. 2 shows the closure in axial cross-section and in a partially opened state. The guarantee strip 25 is removed and the closure cap 20 is pivoted upwards by about 90 ° relative to the closed position, whereby the snap hinge 24 is elastically bent and compressed in some areas and stretched in other areas. The snap hinge has two spaced apart, arcuately extending in the cylinder jacket wall weaknesses, wherein the cylinder jacket wall corresponds to the cap shell 26 and its axial extension in the peripheral region in which the snap hinge is provided. These weak points, which can be seen in the cross section of FIG. 2, have a smaller distance in a central region of the snap hinge than in the edge region, which, when the hinge is unfolded, causes elastic restoring forces to act in the hinge when a dead center is exceeded on the cap - -

cause an elastic force in the direction of the fully open position and act at a smaller opening angle in the direction of the closed position.

In this cross-section can be seen particularly clearly the cylindrical sealing ridge 22 with the outwardly bulging sealing lip 23. The pouring part 10 has at its upper edge nor a pouring lip 15 which is intended to prevent liquid that has a relatively strong adhesion to the material of the spout 10 , on whose outside flows back. Due to the correspondingly shaped pouring lip 15, the flow of the pouring liquid can easily and safely be torn off the mouth of the pouring part 10.

The closure in question is particularly provided for edible oil bottles, which often have the bottle neck shape shown in the figures. Due to the additional retaining ring 30 of the closure, a simple and tamper-proof mounting option for the spout 10 is created by the invention, because the retaining ring 30 with the Vorspung 33 and the retaining flange 32, the spout 10 securely holds even in the open state on the retaining flange 53 of the bottle neck. When closed, the closure is tamper-proof, as it offers virtually no possibility of attacking the closure of the bottle neck.

For purposes of the original disclosure, it is to be understood that all such features as will become apparent to those skilled in the art from the present description, drawings, and claims, even though they have been specifically described only in connection with certain further features, both individually and separately any combination with other of the features or feature groups disclosed herein are combinable, unless this has been expressly excluded or technical conditions make such combinations impossible or pointless. On the comprehensive, explicit representation of all conceivable combinations of features is omitted here only for the sake of brevity and readability of the description.

Claims

- P atentanspr che

1. Plastic closure (100) for bottles (50) whose bottleneck (51) at a distance below the bottleneck mouth (52) has a peripheral and radially outwardly projecting retaining flange (53), the closure at least one pourable on the bottle neck pouring part (51). 10) and a closure cap (20) sealing the pouring part (10) in the closed state, characterized in that the closure also has at least one retaining ring (30) with an inner surface (31) suitable for embracing the retaining flange (53). is provided, wherein the inner surface (31) of the retaining ring (30) at its upper edge a radially inwardly projecting first projection (32) and at an axial distance below the upper edge a radially inwardly projecting second projection (33), wherein the pouring a for encompassing the upper end portion of the bottle neck (51) formed closure foot (1 1), whose lower outer edge e in radially outwardly projecting projection (12) which is in a state separated from the bottle neck (51) with axial play between the radially inwardly projecting first and second projections (32, 33) of the retaining ring (30) is receivable.

2. Plastic closure according to claim 1, characterized in that the axial play of the outwardly projecting projection between the first and the second radially inwardly projecting projection (32, 33) is 1 to 3 mm.

3. Plastic closure according to claim 1 or 2, characterized in that the first projection (32) is a flange inwardly turned, upper end portion of the retaining ring (30).

4. plastic closure according to one of claims 1 to 3, characterized in that the second projection is a bead with rounded triangular cross-section.

5. Plastic closure according to one of claims 1 to 4, characterized in that the radially outwardly projecting projection (12) of the closure foot (11) from the lower edge of an outer cylindrical portion (13) of the closure foot (11) radially outwardly angled flange , - -

6. Plastic closure according to one of claims 1 to 5, characterized in that the closure foot (11) has a U-shaped cross-section for a complete encompassing of the bottle neck edge from the inside, top and outside.

7. Plastic closure according to one of claims 1 to 6, characterized in that an inner cylindrical portion (14) of the closure foot in its lower end region has a radially outwardly projecting, circumferential sealing bead (17).

8. Plastic closure according to one of claims 1 to 7, characterized in that the retaining ring (30) and the closure cap (20) via a flexible hinge portion

(24) are integrally connected.

9. Plastic closure according to one of claims 1 to 8, characterized in that the retaining ring (30) and the closure cap (20) before the first opening in addition by an outside of the peripheral region of a hinge portion (24) encircling

Warranty band (25) are interconnected.

10. Plastic closure according to one of claims 1 to 9, characterized in that the closure cap (20) has a substantially circular disk-shaped head plate (21) and a cylindrical cap casing (26) and one of the inside of its head plate (21) axially projecting, circumferential cylindrical seal bar (22) having a radially outwardly projecting seal lip (23) provided for engagement with the inner surface of a cylindrical upper portion (14) of the spout (10).

1 1. A plastic closure according to one of claims 1 to 10, characterized in that the hinge (24) is designed as a snap hinge, which between two stable positions corresponding to a closed or a completely open state of the closure cap (20), an unstable Dead center defined.

12. Plastic closure according to one of claims 1 to 11, characterized in that the pouring part (10) has a divided into several sectors flow cross-section.

13. Combination of bottle and plastic closure, wherein the bottle (50) on the outside of its bottle neck at a distance below the bottleneck mouth (52) of a - -

and in that the closure has at least one pouring part (10) which can be placed on the bottle neck and a closure cap (20) which tightly seals the pouring part (10) in the closed state, characterized in that Also comprises at least one retaining ring (30) having an inner surface (31) comprising the retaining flange (53), the inner surface (31) of the retaining ring (30) having at its upper edge a radially inwardly projecting first projection (32) and in axial distance to the upper edge of a radially inwardly projecting second projection (33), wherein the pouring part has a for engaging around the upper end portion of the bottle neck (51) formed closure foot (11) whose lower outer edge has a radially outwardly projecting Projection (12), wherein the projection (12) of the closure foot rests on the retaining flange and wherein the holding flange of the bottle neck and the flange of the closure foot are received together between the first and second projections of the retaining ring.

14. A combination according to claim 13, characterized in that the retaining flange (53) and the radially outwardly projecting projection (12) are held together in close fit between the first and the second projection (32, 33).

15. A combination according to claim 13 or 14, characterized in that the attached to a bottleneck mouth pouring part (10) protrudes with a cylindrical portion (16) into the interior of the bottle neck and an outwardly facing sealing bead (17) having, with the inner surface the bottleneck (51) is in sealing engagement and that the pouring part (10) having a cross-sectionally U-shaped closure foot (1 1), the outer cylindrical portion (13), an inner cylindrical portion (14) and the outer and inner portion connecting flange portion (18) so that the bottleneck edge is received inside the formed by the closure foot, U-shaped circumferential groove.

16. Combination of one of claims 13 to 15, characterized in that the pouring part (10) has at its upper end a cylindrical pouring portion (19) with a radially outwardly turned pouring lip (15) at the upper edge.